Film socket filler



Feb. 19, 1935. Kl A, SAWIN 1,991,467

FILM SOCKET FILLER Filed Sept. 22, 1935 \n\/enTor.

Kenneh A-Sown @mm1/51mm 29 Ays..

Patented Feb. 19, 1935 UNITED STATES y 1,991,467'- FILM sooner" FILLERKenneth A. Sawin, Cambridge, Mass., assignor to- Wheeler ReflectorCompany,'Boston, Mass.,l a I corporation of Massachusetts l. y

Application September V22, Serial-No.

v 4 Claims. (Cl. 29-84) This invention relates to a film socket fillerof the type illustrated in U. S. VPatent No. 1,885,684, November 1,1932. patent is for. the purpose of inserting films be- 5 tween thebayonet blades of a socket receptacle such as isused in series lightingsystems, and is formed with a body adapted to be placed between theseparated portions of the bayonet blades and provided with afilm-delivery passage, a magazine to contain a stack of films which aredelivered singly to said passage, and means to eject a film from thepassage and introduce it between the.

bayonet blades.

The magazine constitutes the handle by which the device is held while itis being operated, and said magazine is loaded by removing a cap at theouter en d thereof and the spring whichfis attached to thecap and thenintroducing the fillers intoV the magazine through the open end thereof.This filling of the magazine often has to be done by the lineman on thejob and under these circumstances it frequently happens that when thefilms are introduced into the open end of the handle they turn into anedgewise position with respect to the length of the magazine and becomewedged in place so that it is diflicult to bringA them into theircorrect positiony transversely, of the magazine handle. ,Moreoven somefilms are constructed. so that the opposite sides thereof havedifferentshapes and when such films are used the device operates best when allthe films f in the magazine are faced the same way.

In loading the magazine with such films by hand it is not always easy togive the films the correct position in the magazine.

The present improvementrrelates particularly some place where suitablemachinery may be em- The device shown in ,said

therefrom or causingl any dSDlacement of the films therein. 1 p p Theloading of the magazine involves simply the operation of inserting aloaded holder into the magazine and this can be easily done by anoperator whileiworking on a-job.

l, In order to' give an understanding of the invention I haveillustrated in the drawing a selected embodiment thereofwhich will nowbe described after which the novel featureswill be pointed o ut in theappended claims.

Fig. 1 isla side view with parts broken out of a device embodying my`invention and lillustrating itvinuse; g Y, Fig. 2 is a view on the line2 2, Fig. 1;

y Fig-.-3 isa vview ofthe film holder or cartridge with the; left -handend broken" out;

Fig.- 4 is a section onthe line 4 4, Fig.l 2;A Fig. 5 is an endviewbilig.` 3;

Fig. 6 is aview of one end of the film holder;

Fig. 7 is a perspective view of oneA end of the tubular handlelagj, i

r As statedvabovethe presentinvention is an improvement on the filmsocket filler illustrated in Patent No.,1,885,684November 1, 1932 and'is designedto inserta so-called insulating film 1 between thetwo'contact blades 2 of a socket receptacle 3. Socket receptacles ofthis type `are commonly used in-'electric'jlighting fixtures employingseriesv receptacleheadsthe socket receptacle 3 constituting a receptacleor socket to re' ceiver the'lamp.

.These insulating iilms'l sometimes break down and when this happens itis necessary to remove the; ruptured film and insert a new one, and asindicated 4abovethe device of this application is intended for thispurpose. My improved film socket filler is similar to that illustratedin the above-mentioned Patent No. 1,885,684 in that it comprises a bodyportion indicated generallyat 4,' which is adapted to beintroduced'betweenthe spaced portions of the bayonet contacts 2r andwhich has a film-delivery passage 5. When the'body portion is thusplaced between the bayonet Acontacts 2 the discharge end 6 of thefilm-delivery passage 5 will be situatedVv adjacent the end portions 7of the bayonet'contacts between which the film 1 is to be introduced.

films separatelyy into the passage 5 and means to eject each .film fromthe passage 5 and force it between the ends 'l of the bayonet contacts.The body portion is formed with the two side plates 8, 38 and theintermediate spacing member 9, these The device also comprises means forfeeding r Cil three elements being secured together in any suitable wayas by means of rivets or screws 10.

The intermediate spacing member 9 has a skeleton structure and locatedwithin this skeleton spacing member 9 and between the side plates 8, 38is a film ejector 11 which operates to eject the films individually fromthe passage 5. This film ejector 1l is in the form of a plate which isfast on a shaft 12, one end of which is journalled in the plate 38 andthe other end of which is journalled in a bushing or sleeve 13 rigidwith the side plate 8. This shaft 12 is provided with a finger piece 14by which it may be turned to perform the film-ejectingV operation.

15 indicates a spring which surrounds the hub or sleeve 13 and which isanchored at one end to the sleeve 13 and at the other end to the fingerpiece 14, said spring normally tending to' hold the ejector in itsinoperative position shown in full lines, Fig. 2.

16 indicates a handle by which the device is held while it is beingmanipulated. Thishandle also constitutes the magazine for containing thestack of lms as in said above-mentionedv Patent No. 1,885,684.

The handle 16 is inthe i'orm of a tube which is provided at one end withexterior screwV threads 1'7 adapted toscrew into interior screw threadsformed in a boss 18 to which the handle member 16 is secured.

The Wall of the side plate 8 is formed with an opening 19 in linewiththe handle 16 and through which the films are deliveredfto thepassage 5. e

The parts thus far described, with the exception of the magazine portionof the device, have, in general, the same construction and operation assimilar parts in the above-mentioned patent;

In said patent the stack of films are loaded directly into the handleportion of the device and the latter is provided 4with a spring whichapplies a spring pressure against the Ystack of' films and tends to urgethem forwardly itoward the body portion, said spring' operating to feedthe films into the delivery passage as needed.

In order to load the magazine handle of the device shown in theabove-mentioned patent the cap at the end of the handle and the springand follower attached thereto isremoved and then the films are insertedinto the'open end of the handle and after a required number of' filmshave been -placed in the magazine the cap with the spring attachedthereto is replaced on the handle, the spring and follower bearingagainst the stack of films.

It is frequently necessary to load the magazine while it is being usedon a job and in thus loading the magazine by hand the films sometimesdrop into the magazine in an edgewise position and become wedged in themagazine.

In accordance with the present invention the films are loaded in thefirst instance into a nlm holder which is separate from the handle andfrom the spring therein and which can be readily inserted into thehandle.

The film holder is shown at 20 and it has` a tubular shape with aninterior diameter correspending to the diameter of the films 1. Thisholder 20 is open at one end 21 tor permit the films 1 to be loadedthereinto through said end and at thev other end 42 said holder isprovided with an interior shoulder 22 which may conveniently be producedbyf'orming the tube. 20 with a neck portion or portion of .reduceddiameter, said interior shoulder retaining the films' in the holder andpreventing them from being' discharged therefrom at the end 42. Aremovable retaining device 23 is employed for holding the films withinthe holder 20 and preventing them from being discharged through the openend 21 while the holder is being manipulated and inserted in the handle16. Any suitable retaining device may be employed but I have hereinshown one in the form of a spring clip*Y which has a general U-shape andwhich is inserted through slots 24, 25, formed in the tubular holder 20adjacent the open end 21. This retaining device is removed when theholder is to be loaded with lms 1, the loading being done by insertingthe films through the open end 21. This operation of loading the holdermay be done by hand or by any suitable machine or appliance which willaccurately and rapidly place the films in the holder.

The holder is shown as having an opening 38 in one side through whichthe films may be seen.

The films which are used are sometimes constructed so that the opposedfaces have different shapes as illustratedvinl the drawing and when suchfilms are used itis desirable that they should be so placed in theholder that all the films will face the same way. The ability to loadthe holder at the factory or by means of a machine ensures this result.Y

After the holder 20 is fully loaded then the retaining clip 23 isinserted through the slots 24, 25 as shown in Fig. 3 thereby to retainthe films in the holder. This clip prevents the films from beingdischarged through the open end 21 and the shoulder 22 prevents thefilms from being discharged through the opposite end 42.

When the holder or cartridge 20 has been thus loaded with films 1 it isready to be placed in the magazine handle 16 whenever it is necessary toreload the handle. To do this said handle is unscrewed from the boss 18and the loaded holder 2O is inserted into the open end of the handle 16.

Situated Within the handle 16 is a spring 24, one end of which engagesthe cap 25 which is preferably removably secured tothe end of the handie16, and the other end of which engages a fol lower 26. The follower andthe spring are of a size to pass freely through the throat 2-'7 formedby the interior shoulder 22 and when the loaded holder 20 is insertedinto the open end of the handle 16 the end film 1 which is in engagementwith the shoulder 22 will be brought into engagement with the followerand the spring 24 Will be compressed.

The handle 16 is provided with two opposed slots 28 which extend fromthe end of the handle to a point somewhat beyond the screw-threadedportion 17 thereof and the inner end of each slot is widened slightly soas to provide the two notches 29.

The U-shaped retaining member 23 extends beyond. the holder 2.0 as shownin Figs. 3 and 5 and when the loaded cartridge or holder 20 is insertedinto the handle 16 the projecting portions 30, 31 of the retainingmember 23 enter the slots 28. The U-shaped retainingmember 23 ispreferably made resilient and in order to permit it i v toventer theslots 28 the two legs of said member are forced toward each otherslightly. When the loaded cartridge 20 has been inserted into the handle16 a sufficient distance so that the projecting portions 30 and 31 ofthe retaining member 23 engage the end of the slots 28, the resiliencyof the legs of the member 23 will cause them to separate slightly fromeach other and snap into the notches 29. In this way the retainingmember serves to lock the loaded holder 20y in the handle 16. After aloaded cartridge 20 has been thus placed and locked in the handle 16,then the handle can be screw threaded to the boss 18 and since the slots28 are longer than the depth of the boss the projecting portions of theretaining member 23 will not interfere ywith attaching the handle 16 tothe boss 18. After the handle has been thus secured to the boss theretaining member 23 may be withdrawn and as soon as this is done theexpansive action of the spring 24 will force the stack of films forwardin the holder 20 thereby delivering the end film through the opening 19into the film-delivery passage 5.

With this invention the filling of the magazine with films isfacilitated because the loading of the holder 20 involves merelydepositing a sufficient number of individual films into the open end ofthe holder and this is a simple operation since it is done when theholder is removed from Vthe handle 16. After the cartridge or holder 20has been loaded and the films have been locked therein by the retainingmember 23 the insertion of the loaded cartridge vor holder into thehandle 16 and locking it therein involves simply one operation. Afterthis loaded holder has been thus inserted in the handle the latter canbe manipulated and attached to the body portion without paying anyattention to the films since they are locked in the' holder 20 and thelatter is locked in the handle 16 by the retaining member 23.

The use of this invention makes it possible for a workman to carry withhim a plurality of loaded cartridges or holders so that when he is outon a job and it becomes necessary to reload the magazine the operationcan be accomplished simply by unscrewing the handle from the bodyportion, removing the empty holder and inserting into the handle afilled holder as above described. The implement is used for introducinglms between the bayonet contacts in the same manner as described in saidpatent, that is, the operator holds the implement by the handle 16 andyplaces the body portion 4 in position between the bayonet contacts 2 asshown in Fig. 1 and then he actuates the finger piece 14 swinging itfrom the full to the dotted line position in. Fig. 2. This operationcarries the ejector 11 from its full to the dotted line position andthus operates to eject a film through the passage 5 into positionbetween the ends 7 of the bayonet contacts. When the pressure on thefinger piece 14 is released the spring 15 returns the ejector and fingerpiece to the full line position Fig. 2 thereby uncovering the opening19.. The spring 24 then forces the stack of films forward to deliver theendfilms through the opening 19 into the passage 5 and in position to beejected therefrom by the next actuation of the ejector 11.

I claim.

1. A film socket fillercomprising a body having a film-delivery passage,a handle connected to the body and having a film-receiving chambercommunicating with the passage, a tubular film holder separate from thehandle and insertable thereinto and removable therefrom, said holderadapted to hold a plurality of films, a removable retainer to retain thefilms in the holder, a

spring in the handle acting against the films in the holder to feed thelms to said passage when the retainer is removed, said retainer when inplace having an interlocking engagement with the handle to lock theholder therein.

2. A film socket filler comprising a body having a film-deliverypassage, a handle having its inner end detachably connected to the bodyand also having a film-receiving chamber which communicates with saidpassage when the handle is secured to the body, a film holder separatefrom the handle and insertable into said chamber and removable therefromthrough the inner end of the handle when it is detached from the body,said holder being open at both ends and adapted to hold a plurality offilms, a spring in the handle-which extends through one open end of theholder and acts against. the films therein to feed them from the holderto the passage, and means to enject the films singly from the passage.

3. A film socket filler comprising a body having a film-deliverypassage, a handle having its inner end detachably connected to the bodyand also having a film-receiving chamber which communicates with ysaidpassage when the handle is secured to the body, a film holder separatefrom the handle and insertable into said chamber and removable therefromthrough the inner end of the handle when it is detached from the body,said holder being open at both ends and having an interior shoulderadjacent its outer end and adapted to hold a plurality of lms, a springin the handle extending through the outer end of the holder and actingagainst the films to feed them to said passage, and means to eject thekfilms singly from the passage.

4. A film socket filler comprising a body having a film-deliverypassage, a handle having its inner end detachably connected to the bodyand also having a film-receiving chamber which communicates with saidpassage when the handle is secured to the body, a tubular film holderseparate from the handle and insertableinto said chamber and removabletherefrom through the inner end of the handle when it is detached fromthe body, said holder having an interior shoulder at its outer end andadapted to hold a plurality of films, a spring in the handle acting onthe films in the holder through the outer end thereof and feeding themto the passage, and a removable retainer carried by the inner end of theholder and serving to retain the films there- KENNETH A. SAWIN.

